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Displaying 56451 - 56475 of 74207

Computer-Aided Manufacturing Engineering

September 1, 1995
Author(s)
Mike Smith, Swee K. Leong
Although many software tools are currently available for manufacturing engineers, they do not work together and cannot be readily integrated. This lack of integration significantly diminishes the productivity of manufacturing engineers, reduces the quality

Hydrodynamic similarity in an oscillating body viscometer

September 1, 1995
Author(s)
Robert F. Berg
Hydrodynamic similarity can be used to calibrate simply and accurately an oscillating-body viscometer of arbitrarily complicated geometry. Usually, an explicit hydrodynamic model based on a simple geometry is required to deduce viscosity from the transfer

Low Heat-Flux Measurements: Some Precautions

September 1, 1995
Author(s)
Thomas J. Ohlemiller, A F. Robertson
Simple experiments are described for the purpose of illustrating measurement errors and their avoidance during use of Gardon or Schmidt0Boelter toal heat flux sensors. These errors can assume serious proportions of the observed signal at flux levels below

Microform Calibration Uncertainties of Rockwell Diamond Indenters

September 1, 1995
Author(s)
Jun-Feng Song, F Rudder, Theodore V. Vorburger, J Smith
National and international comparisons in Rockwell hardness tests show significant differences. Uncertainties in the geometry of the Rockwell diamond indenters are largely responsible for these differences. By using a stylus instrument, with a series of

Microlithography by Using Neutral Metastable Atoms and Self-Assembled Monolayers

September 1, 1995
Author(s)
K K. Berggren, A Bard, J L. Wilbur, John Gillaspy, A G. Helg, Jabez McClelland, S Rolston, William D. Phillips, M Prentiss, G M. Whitesides
Lithography can be performed with beams of neutral atoms in metastable excited states to pattern self-assembled monolayers (SAMs) of alkanethiolates on gold. An estimated exposure of a SAM of dodecanethiolate (DDT) to 15 to 20 metastable argon atoms per

Rapidly Renewable Polishing Lap

September 1, 1995
Author(s)
Christopher J. Evans, R E. Parks
Textured laps can be created by slumping uniform thin films of appropriate materials over textured substrates that have been generated to the required figure. The film can easily be replaced and the lap shape is invariant since the lap substrate never
Displaying 56451 - 56475 of 74207
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